Since I updated to the latest firmware for the nano (1.1.150) I have experienced playback failure. After a 90 min recording sessions in HD & SD mode I would pressed the play button to review the vision and the Nano indicated that it was playing back but I had no output from the SDI. When I reboot the Nano Playback was restored and continued to work as normal.

Hi Dan,
I have already done that and no it will not work, you have to power down and reboot. It's a bit of problem when you want to quickly review your take. I am busy with my Christmas work and can not afford the time to test. I will do some testing over the Xmas holidays .